The book covers the linux ipchains packet filter capabilites specificly.

David Lang

On Sat, 8 Jul 2000, William Stearns wrote:

> Date: Sat, 8 Jul 2000 20:45:32 -0400 (EDT)
> From: William Stearns <[EMAIL PROTECTED]>
> To: Ng Pheng Siong <[EMAIL PROTECTED]>
> Cc: Brent Chapman <[EMAIL PROTECTED]>,
>      ML-firewalls <[EMAIL PROTECTED]>,
>      William Stearns <[EMAIL PROTECTED]>
> Subject: Re: Second Edition of "Building Internet Firewalls" now available
> 
> Good day, Ng and Brent,
> 
> On Sun, 9 Jul 2000, Ng Pheng Siong wrote:
> 
> > On Fri, Jul 07, 2000 at 09:46:36AM -0700, Brent Chapman wrote:
> > > pages), it now covers Windows NT and Linux as well as UNIX, and it 
> > 
> > Et tu, Brent?
> > 
> > What's the difference between Linux and UNIX?
> 
>       (The following is my best understanding of the topic, but may not
> be entirely correct)
>       Unix is a trademark, originally owned by AT&T, for it's operating
> system.  (I believe that trademark has been transferred to The Open
> Group.)
>       Linux is an operating system that was written without any of the
> original AT&T Unix source code.  It looks and acts like Unix (it
> generally follows the relevant POSIX standards), but does not
> have the right to use that trademark.
>       Cheers,
>       - Bill
> 
> ---------------------------------------------------------------------------
> Daphne: At least someone appreciates my mother tongue.
> Niles: Yes, I've always had an ear for your tongue.
> --------------------------------------------------------------------------
> William Stearns ([EMAIL PROTECTED]).  Mason, Buildkernel, named2hosts, 
> and ipfwadm2ipchains are at:                http://www.pobox.com/~wstearns
> LinuxMonth; articles for Linux Enthusiasts! http://www.linuxmonth.com
> --------------------------------------------------------------------------
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